Pushbutton actuated lock



- May 30, 1967 F. J. RUSSELL ETAL PSHBUTTON ACTUATED LOCK Filed Aug. 9, 1965 4 Sheets-Sheet l o El -L- W1/QED L JENA/le:

' l N VENT ORS ATTO RME YS May 30, 1967 F. J. RUSSELL ETAL 3,321,942

PUSHBUTTON AGTUATED LOCK Filed Aug. 9, 1965 4 Sheets-Sheet 2 fl ya@ I N V EN TORS 5M Pwd/MJL ATTQE'LsEx/s May 30, 1967 F. .1. RUSSELL ETAL 3,321,942

PUSHBUTTON ACTUATED LOCK Filed Aug. 9, 1965 4 Sheets-Sheet 5 Il QS mfc/44x22: L AQMSTQo/v@ Eff-265D L n WENN/E INVENTORS ATTOMEV S May 30, 1967 F. J. RUSSELL ETAL. 3,321,942

' PUSHBUTTON AGTUATED LOCK Filed Aug. 9, 1965 4 Sheets-Sheet 4 El Q03 ATT'DMEV S United States Patent O 3,321,942 PUSHBUTTON ACTUATED LOCK Fred J. Russell, 8635 Otis St., South Gate, Calif. 90280, and Richard L. Armstrong, Santa Fe Springs, and Fred L. Jennie, Buena Park, Calif.; said Armstrong and said Jennie assignors to said Russell Filed Aug. 9, 1965, Ser. No. 478,366 9 Claims. (Cl. 70-146) The invention relates to a door lock of the type which can be locked from the inside by depressing a pushbutton and which can be unlocked either by turning the 1nside knob or by releasing the pushbutton mechanlsm by the use of a key acting through the outside knob.

When a lock of this kind is to be locked by a locking button at the inside knob, some elements must reach from the knob into the interior of the lock in order to do the locking, and some elements must release by appropriate means. In the past, some resort has been had to a flocking Ibutton which turns. Such a button has its individual requirements and has its limitations. Other devices have resorted to a pushbutton means of operation. Such devices have had some recognizable defects. Sometimes, considerable movement is necessary to have the parts operate properly, thus requiring a pushbutton which may protrude to an undesirable distance from the knob. Also, all of these pushbuttons have required a mounting in a lock mechanism which does not allow the knobs to project a constant distance from the face of the door, regardless of the thickness of the door.

It is therefore 'among the objects of the invention to provide a new and improved pushbutton type lock which, by making use of a relatively limited push button movement, provides a locking arrangement which is dependable, secure, and which, at the same time, can be easily released by authorized means.

Another object of the invention is to provide a new and improved pushbutton type lock, the parts of which are relatively small and compact, capable of being fabricated with relative ease, -and inexpensively assembled.

Another object of the invention is to provide a new and improved push-button type lock which is positive and quiet in its operation, which gives the sensation of dependable operation when manipulated, and which is of such construction .as to permit employment of low friction plastic material for strategic elements of the combination.

j Another object of the invention is to provide a new and improved `button type lock which maintains a constant knob projection from door faces, regardless of varying door thickness on which the lock might be mounted.

Still another object of the invention is to provide a new and improved pushbutton type lock which, though incorporating singular advantages and improvements over those heretofore available, nevertheless requires no departures from conventional proportions and over-all appearance in design, the device moreover being such that it can be readily adjusted to doors of dierent thickness.

With these and other objects in View, the invention consists in the construction, arrangement, and combination of the various parts of the device, whereby the objects contemplated are attained, Ias hereinafter set forth, pointed out in the appended claims, and illustrated in the accompanying drawings.

In the drawings:

FIGURE 1 is a horizontal sectional view of a fragment of door, showing the pushbutton type lock assembled on it in operating position.

FIGURE 2 is a cross-sectional view taken on the line 2-2 of FIGURE l.

FIGURE 3 is a cross-.sectional view similar to FIG- URE 2, but showing the parts in a second position of operation.

ICC

FIGURE 4 is a longitudinal sectional view of the inside portion of the lock assembly, showing the parts in 11nlocked condition.

FIGURE 5 is a fragmentary longitudinal sectional view taken on the line 5-5 of FIGURE 4 at right angles to the sectional view of FIGURE 4.

FIGURE 6 is a longitudinal sectional view similar to FIGURE 4, but showing the pushbutton depressed to locked condition.

FIGURE 7 is a fragmentary longitudinal sectional view on the line 7-7 of FIGURE 6, similar to the fragmentary sectional view of FIGURE 5, but showing the pushbutton depressed.

FIGURE 8 is a cross-sectional view on the line 8-8 of FIGURE 6.

FIGURE 9 is a cross-sectional view on the line 9-9 of FIGURE 6.

FIGURE l0 is a cross-sectional view on the line 1ll10 of FIGURE 6.

FIGURE ll is a cross-sectional View on the line 11-11 of FIGURE 6.

FIGURE 12 is a fragmentary cross-sectional view on the line 12-12 of FIGURE 8.

FIGURE 13 is a fragmentary elevational view on the inner end of the inside knob shank..

In an embodiment of the invention which has been chosen for illustrative purposes, there is shown a fragment of door 10 upon which is mounted a door lock device indicated generally by the reference character 11. The door lock device 11 consists of certain substantially conventional members, including an inside knob or operating member 12, an outside knob or operating, member 13, a latch bolt assembly 14, and a spindle 15, interconnecting the inside and outside knobs 12 and 13, in an appropriate fashion, which operates a roll-back 16 in a substantially conventional fashion, fo-r withdrawing a latch bolt 17 in the latch bolt assemblyl 14.

A pushbutton 1S is mounted in the inside knob 12, and to it is attached appropriate mechanism, so that, by de pressing -the pushbutton 18, the door lock device 11 cannot be manipulated to withdraw the latch bolt 17 by rotation of the outside knob 13. The lat-ch bolt 17, however, can be withdrawn either by rotating the inside knob 12, Ibymanipulation of a key 19 in a key-operated mechanism 20 in the outside knob 13, or by physically depressing the latch bolt 17. The pushbutton 18 and the parts which respond to its operation comprise, to a large extent, the mechanism involved in the present invention.

For mounting the door lock device 11 upon the door 10, use is made of a rose assembly 25 on what will be termed, for convenience, the inside of the door 10. The rose assembly 25 consists of a mounting plate 26 and a decorative rosette 27. There is a similar rose assembly 28 for the outside knob 13 consisting also of a similar mounting plate (not shown), but to which are fastened posts 29 and 30. A decorative rosette exposed portion of the rose assembly 28. Screws 32 and 33 extend from the rose assembly 25 into the respective posts 29` and 30. In this way, the rose assemblies 25 and 28 are anchored to each other and to the door 10 and, in this way, act to support remaining attached portions of the door lock device 11. These features are substantially conventional and uniform in lock structures of the kind herein described.

The inside knob 12 has a shank 34 overlying a collar 35 of the rosette 27, as shown advantageously in FIG- URES l, 4, and 6. A shaft extension 36 of the shank 34 extends into the rose assembly 25. Surrounding the shaft extension 36 is a bushing 37 keyed nonrotatably within the rose assembly 25.

An interior housing, indicated generally by the reference character 39,

is shown as being constructed of an appropriate synthetic plastic resin material. The interior housing 39 has a wall 4t) in which is a hole 41, through which the shaft extension 36 passes and wherein 1t 1s secured by a snap ring 42. The wall 40 of the housing 39 bears directly against the adjacent face of the bushing37, as shown in FIGURES and 7. Through this connection, the shank 34 and its attached inside knob 12 are rotatably mounted upon the rose assembly 25. By use of similar structure (not shown), the outside knob 13 is rotatably mounted upon the rose assembly 28. A substantially con ventional torsion spring assembly 43 serves to yieldably hold the outside knob 13 in a selected initial position, where certain parts are in alignment, and to return it to that position after it is rotated for any reason. In order for the inside knob 12 to be able to withdraw the latch bolt 17, a connection must be provided between the inside knob 12 and the spindle 15 which, in the embodiment shown, is a square tubular spindle providing an interior space 44. To accomplish this, there is provided, within a space 46 in the shank 34, a tubular sleeve forming a slide member 47. The slide member 47 is cylindrical on its exterior and has a square hole 48 on the interior. The square hole 48 is best shown in FIGURES 8 and 1l.

In order to make the slide member 47 nonrotatable with respect to the shank 34 and accordingly to the inside knob 12, projections 49 on diametrically opposite sides of and integral with the slide member 47 extend outwardly through appropriate radially facing openings 50 in the shaft extension 36 of the shank 34. The openings 50 are intentionally made oversized with respect to the size of the projections 49 to provide, as is often necessary in lock construction, a degree of rotary lost motion between the inside knob 12 and the spindle 15. Except fOr this lost motion, the shank 34 and the slide member 47 are in nonrotatable engagement and hence, since the spindie is nonrotatably mounted in the slide member 47, the spindle 15 is also nonrotatable with respect to the inside knob 12, except for the lost motion. Accordingly, whenever the Iinside knob 12 can be rotated, the spindle 15 can be rotated. The spindle 15, in turn, has the rollback 16 nonrotatably mounted on it by means of a hubv 51 (see FIGURE 3).

The latch bolt assembly 14 includes a case 55 to which is attached a case extension 56. Openings 57 and 58 in lthe case extension 56 accommodate the posts 29 and 30 respectively. A latch bolt slide 59, forming part of the latch bolt 17, is slidably mounted between opposite elements of the case extension 56. On the latch bolt slide 59 are shoulders 60 and 61 which are engaged by one end or the other of the rollback 16 when it is rotated by rotation of the spindle 15, so that the latch bolt 17 can in this manner be withdrawn by action of the inside knob 12. By means (not shown), the same spindle 15 is nonrotatably connected to the outside knob 13.

It is important to note that the projections 49 are appreciably longer than the thickness of the shaft extension 36 and that they extend through and beyond the shaft extension 36. What makes possible unrestricted rotation of the inside knob 12 is the presence of an annular, inwardly open recess 62 on the inside wall of the bushing 37. The recess 62 is in alignment with the projections 49. When the projections are in such axial position as to lie within the recess 62, they can be rotated unrestrictedly. Although the annular recess 62 is defined as being in the bushing 37 and the projections 49 as on the slide member 47, the important thing is to have the bushing 37 and slide member 47 in a mating relationship, which could be done by reversing the location of recess and projections.

To block rotation of the spindle 15, axially extending slots 63 and 64 are provided in the bushing 37, in the present example, joining the annular recess 62. In initial or normal position of the inside knob 12, and accordingly the projections 49, the projections 49 are in alignment with the slots 63 and 64. The blocking operation is accomplished by pushing upon the pushbutton 18 to move it from `the position of FIGURES 4 and 5 to the position of FIGURES 6 and 7. This action moves the projections 49 into the slots 63 and 64. Since the bushing 37 is nonrotatable, actually being a nonrotatable portion of the rose assembly 25, the slide member 47 in this way is secured nonrotatably to the stationary rose assembly 25. Since the spindle 15 is in nonrotatable engagement with the slide assembly 47, it is anchored against rotation by the same means. The spindle 15, being in nonrotatable engagement with the outside knob 13, the outside knob 13 is thereby blocked against rotation.

To move the slide member 47 axially inwardly by pressure upon the pushbutton 1S, the pushbutton 18 is prog vided with a hollow sleeve 65, and the hollow sleeve 65 is slidably mounted in a support 66 secured to ends 67 of a bracket 67. An inner end 65 of the hollow sleeve 65 bears against an outer end 68 of the slide member 47. Accordingly, when the pushbutton 18 is pushed slidably inwardly through a hole 69 in a knob `face 69 of the inside knob 12, it moves the slide member 47 axially inwardly or from left to right, as viewed in FIGURES 4, 5, 6, and 7, against tension exerted by a spring 70, which is supported by a second wall 71 of the housing 39. When pressure is released upon the pushbutton 18, the spring 70 is in a position to return the pushbutton 18 outwardly to initial position, subject to temporary retention. This temporary retention is, of course, needed in order to have the locking relationship continue, once it has been set by operation of the pushbutton 18, until there is need to have it released.

To hold the push button 18 in depressed position, which means holding the door lock device 11 in locked condition, use is made of a crank arm 75, a plan view of the crank arm 75 being shown in FIGURES 9 and ll. To make it possible for the crank arm 75 to serve its purpose, there is provided a recess 76 at the inner end of the slide member 47, in which a latching end 77 of the crank arm 75 can engage. The recess 76 is actually an undercut portion of a collar 78, preferably of a synthetic plastic resin material, which is rotatably mounted upon the inner end of the slide member 47. The collar 78 includes projections or wings 79 on diametrically opposite sides corresponding approximately to respective projections 49, with the recess 76 actually lying beneath the respective projections 49 and 79. The collar 78 is freely rotatable upon the slide member 47. Because the projections or wings 79, however, are in alignment and lie within radially facing narrow extensions 80 of the respective openings 501 in the shaft extension 36, the collar 78 actually is prevented from rotating with respect to the shaft extension 36, and accordingly the shank 34, except for the lost motion permitted by the greater breadth of the openings 50 in which are positioned the projections 49. This relationship can be appreciated more readily from an examination of FIGURES 9, 1l, and 13. The collar 78 actually is provided with a split 81, so that it can be applied over the end of the slide member 47.

The crank arm 75 is rotatably mounted 'by means of a boss 82 protruding from the exposed surface 83 of the wall 40 of the housing 39. A torsion spring 84 has one end 85 in engagement with a tab 86, forming part of the crank arm 75, and another end 87 in engagement with a boss 88 protruding from the surface 83, the midportion of the torsion spring 84 being looped around the boss 82. The torsion spring 84 is biased normally to rotate the crank arm 75 in a counterclockwise direction, as viewed in FIGURE 11, which is a clockwise direction as viewed in FIGURE 9. This being the case, when the pushbutton 18 is depressed to the position of FIGURES 6 and 7, the recess 76 is moved to a location coinciding with the location of the latching end 77 of the crank arm 75, and the latching end 77 will accordingly be impressed into the recess 76, which is the relationship of parts in FIGURES 6, 7 and 9. This action holds the push-button 18 in depressed position until released by one or another of the means herein provided.

One of the means consists of rotation of the inside knob 12. When the inside knob 12 is rotated, the shank 34 and shaft extension 36 are also rotated. The movement of the shank 34 and its shaft extension 36 is made possible by the clearance between the projections 49 and the edge 89 of the opening 50. Assuming the rotation to be in a clockwise direction, as viewed in FIGURE 9, for example, an extension 80 of the opening 5t), through which the latching end 77 of the crank arm 75 extends, is rotated and immediately (see FIGURE 13) moves the latching end 77 out of the recess 76, thereby to disengage it from the projection 79; namely, moving it from the position shown in FIGURES 7 and 9. The spring 70 then acts to move the slide member 47 in a direction from right to left, as Viewed in FIGURES and 7, for example, and the slide member 47 moving against the hollow sleeve 65 in this Way returns the pushbutton 18 to the position of FIGURE 5.

Another of the means employed to release the pushbutton 1S from depressed position, and accordingly to disengage the spindle from nonrotatable engagement with the rose assembly 25, is to depress the latch bolt 17. To make this release possible, there is provided a gate 90 which is a substantially cylindrical member, preferably of synthetic plastic resin material, which is rotatably mounted upon the housing 39l by means of a shaft 91, which rotatably engages a hole 92 in an enlargement 93 in the Wall 40 of the housing 39, as shown clearly in FIGURES 4 and 6. A head 94 may be received in a recess 95 in the mounting plate 26 to improve the stability. Between the head 94 and the shaft 91 is a cutaway portion forming a cam face 96, the form of which is readily ascertainable in FIGURES 9 and 11. The cam face 96 normally lies in engagement with a side edge of an actuating end 97 of the crank arm 75, this being the position of FIGURE 9. The gate 90 is normally spring biased to that position by action of a spring 9S, shown in plan View in FIGURE 8, wherein loops of the spring 98 which surround a portion of the shaft 91 underneath the overhanging end of the gate 90 has ends 99 and 100 wihch bear against respectively opposite sides of. a boss 101 of the enlargement 93', a spring keeper 102 forming part of the `gate 90.

A wing 103, on the side of the gate 90 opposite from the spring keeper 102, lies in the path of movement of the shoulder 60, which is carried by the latch Ibolt slide 59, as shown in FIGURES 2 and 3. When the latch bolt slide 59 is shifted from left to right, as shown in FIGURES 2 and 3, which would happen should the door 10 be inadvertently closed, the shoulder 60 is moved into engagement with the wing 103, causing the gate 90 to rotate in a counterclockwise direction, as viewed in FIGURES 2 and 3. This causes the shaft 91 and the accompanying cam face 96 to rotate in a counterclockwise direction, as viewed in FIG- URE 9, which is a clockwise direction, as viewed in FIG- URE 11. One edge of the cam face 96 thereupon moves against actuating end 97 of the crank arm 75, causing the crank arm 75 to rotate slightly in a clockwise direction, as viewed in FIGURE 11, which is a counterclockwise direction, as viewed in FIGURE 9. Movement, as described, lifts the latching end 77 of the crank arm 75 from its enga-gement in the recess 76 under the Wings 79 of collar 78. Release of the latching end 77 from the recess 76 under the wings 79 of collar 78, as noted, permits the slide member 47 to be moved endwise by action of the spring 70` in the same manner as has been described, resulting from release of the latching end 77 by rotation of the inside knob 12. Movement of latch bolt 17 accordingly unlocks the door lock device 11.

Still another means for unlocking the door lock device 11 is by manipulation of the key 19. To accomplish this, there is attached to the key-operated mechanism a small solid square spindle 11G, which is small enough to rotate freely Within the interior space 44 of the square tubular spindle 15. This relationship is clearly shown in FIGURES 2, 3, 8, 9, and 11. The square spindle 110 extends into a bushing 111, which is mounted in the inside end of the hollow sleeve 65, to which the pushbutton 18 is attached. In the bushing 111 is a specially shaped hole 112, the shape of which is clearly shown in FIGURE 10. The hole 112 provided with projections 113 allows for a degree ol lost motion in a rotary direction between the square spindle and the bushing 111, the lost motion being needed in order to properly manipulate the keyoperated mechanism 20` in a manner customarily required for the operation of lock mechanisms. Extensions 114 and 115 of the bushing 111 extend through cutouts 116 and 117, respectively, in the wall of the hollow sleeve 65, thereby making the bushing 111 nonrotatable with respect to the hollow sleeve 65. The extensions 114 and 115 are also positioned in cutouts 118 and 119, respectively, in the support 66, which is mounted upon the bracket 67. Since the support 66 forms part of the inside knob 12, the square spindle 110 is therefore nonrotatably connected to the inside knob 12, except for the lost motion provided in the hole 112. As a consequence, when the key 19 is inserted in the key-operated mechanism 20 in the outside knob 13 and is rotated, the square spindle 110 is rotated, even though the spindle 15 is blocked against rotation. Rotation of the square spindle 110 rotates the inside knob 12 and, as a consequence, rotates the shank 34 and shaft extension 36, thereby to disengage the latching end 77 of the crank arm 75 from its engagement with the recess 76 under the wings of collar 78 in the manner heretofore described in connection with release by normal rotation of the inside knob 12.

To further improve the operation of the device, there is provided a coil spring 120 housed within a chamber 121 in the housing 39, as shown in FIGURES 4, 5, 6, 7, and 8. Ends of the coil spring 120 bear against opposite sides of a boss 122, forming part of the housing 39. The same ends of the coil spring 120 also bear against a spring keeper 123, which is part of the snap ring 42, having portions extending into the narrow extensions 80 of the openings 50, thereby making the snap ring 42 nonrotatable with respect to the shank 34. Since the coil spring 120 has its ends bearing against a stationary portion of the door lock device 11 when the inside knob 12 is rotated, one side or the other of the spring keeper 123 will press against a corresponding end of the coil spring 120, building up energy in the coil spring 120. When the inside knob 12 is then released, it will be returned immediately to initial or normal position, irrespective of which direction the inside knob 12 may have been rotated. In initial position, the radially facing narrow extension 89 is held in alignment with the slot 63 by action of the coil spring 120 acting in torsion. It should be noted that action of the torsion spring 43 (acting between the outer rose assembly 23 and the outer knob 13, the spindle 15, and the slide member 47) serves to align the projections 49 with the radially facing narrow extensions 80 and, accordingly, with the slot 63.

Appreciable advantage is obtained by constructing the housing 39 of an appropriate synthetic plastic resin material. For assembling the housing 39, extensions 127 are provided on the second wall 71, as shown in FIGURE 12,

and shoulders 128 on the extensions 127 overlie the surface S3 of the wall 40 to anchor the second wall 71 to the wall 40. The extensions 127 may be relatively narrow and spaced circumferentially on opposite sides, as shown in FIGURE 11. Since the plastic material is resilient to a degree, the shoulders may be sprung for assembly, as suggested by the broken line of FIGURE 12. Also, by making the gate 90 of synthetic plastic resin material and balancing it as shown, the parts may be held to close tolerances without prospect of binding, and a quiet, frictionfree operation, wherever moving parts engage each other, is in this manner greatly improved. Moreover, by having the gate 90 elongated, as shown, which also makes possible an elongated construction for the wing 103, the shoulder 60 of the latch bolt slide 59 can be moved to any one of a number of positions crosswise with respect to the door, while still enjoying a proper opera-ting engagement with the gate 90. Operation is also unaffected by mounting the door lock device 11 on doors of different thickness. Also, the important operating parts are secured nonrotatably to the rose assembly 25 on one side only of the door lock device Il, and what few operating parts need to be connected into operating relationship can vary in their position to an appreciable degree without changing in any respect the operating condition.

While the invention has herein been shown and described in what is conceived to be the most practical and preferred embodiment, it is recognized that departures may be made therefrom within the scope of the invention, which is not to be limited to the details disclosed herein, but is to be accorded the full scope of the claims, so as to embrace any and all equivalent devices.

Having described the invention, what is claimed as new in support of Letters Patent is:

1. In a lock for a door, a stationary portion including a rose mounted nonrotatably on said door, a hand-hold rotatably mounted in said stationary portion, said handhold having a radially facing opening therein, said stationary portion having an arcuate groove adjacent said radially facing opening and an axially extending slot joining said arcuate groove, a slide member slidably mounted in said hand-hold, at least one projection extending from the slide member through and beyond said opening in the hand-hold, said slide member being normally spring biased to a first position wherein said projection is in alignment with and extends into said arcuate groove in said stationary portion, a crank arm rotatably mounted on said stationary portion, said crank arm having a latching end, said slide member having a transversely facing recess adjacent one end thereof having a position in alignment with said latching end of the crank arm when the slide member is in an inwardly shifted second position and wherein said projection is in a position within said axially extending slot in said stationary portion and is removed from the arcuate groove, cam means on said hand-hold having an operating engagement with said crank arm whereby to move said latching end of the crank arm out of engagement with said transversely facing recess when said handhold is rotated, whereby said slide member is released for movement to said first position.

2. In a lock for a door, a stationary portion including a rose mounted nonrotatably on said door, said rose including a bushing, a hand-hold rotatably mounted in said bushing, said hand-hold having a radially facing opening therein, said bushing having an annular groove adjacent said radially facing opening and an axially extending slot joining said annular groove, a slide member slidably mounted in said hand-hold, at least one projection extending from the slide member through and beyond said opening in the hand-hold, spring means acting in an axial direction between said stationary portion and said slide member to urge said slide member to a first position wherein said projection is in alignment with and extends into said annular groove in said bushing, a crank arm rotatably mounted on said stationary portion, said crank arm having a latching end and an actuating end, said slide member having a transversely facing recess adjacent one end thereof having a position in alignment with said latching end of the crank arm when the slide member is in an inwardly shifted second position and wherein said projection is in a position within said axially extending slot in the bushing and removed from the annular groove, cam means on said hand-hold having an operating engagement with said latching end of the crank arm whereby to move said latching end of the crank arm out of engagement with said transversely facing recess when said hand-hold is rotated, whereby said slide member is released for movement by said spring means from said second position to said rst position.

3. 1n a lock for a door, a stationary portion including a rose mounted nonrotatably on said door, a hand-hold rotatably mounted in said stationary portion, said handhOld having a radially facing opening therein, said stationary portion having yan arcuate groove adjacent said radially facing opening and an axially extending slot joining said arcuate groove, a slide member slidably mounted in said hand-hold, at least one projection extending from the slide member through and beyond said opening in the hand-hold, said slide member being normally spring biased to a first position wherein said projection is in alignment with and extends into said arcuate groove in said stationary portion, a crank arm rotatably mounted on said stationary portion, said crank arm having a latching end, said slide member having a transversely facing recess in a position of alignment with said latching end of the crank arm twhen the slide member is in an inwardly shifted second position and wherein said projection is in a position within said axially extending slot and removed from the arcuate groove, cam means on said hand-hold having an operating engagement with said crank arm whereby to move said latching end of the crank arm out of engagement with said transversely facing recess when said hand-hold is rotated whereby said slide member is released for movement to said rst position, said slide member including an axially extending sleeve with said projection at one end thereof adapted in one of its positions to nonrotatably engage said handhold, a collar rotatably secured to said sleeve, said collar having a radially extneding projection spaced axially from said first identified projection and forming said transversely facing recess for reception of said latching end of the crank arm.

4.. In a lock for a door, a stationary portion including a rose mounted nonrotatably on said door, a hand-hold rotatably mounted in said stationary portion, said handhold having a radially facing opening therein, said stationary portion having an arcuate groove adjacent said radially facing opening and an axially extending slot joining said arcuate groove, a slide member slidably mounted in said hand-hold, at least one projection extending from the slide member through and beyond said opening in the hand-hold, said slide member being normally spring ibiased to a rst position wherein said projection is in alignment with and extends into said arcuate groove in said stationary portion, a crank arm rotatably mounted on said stationary portion, said crank arm having a latching end, said slide member having a transversely facing recess adjacent one end thereof having a position in alignment with said latching end of the crank arm when the slide member is in an inwardly shifted second position wherein said projection is in a position within said axially extending slot and removed from the arcuate groove, cam means on said hand-hold having an operating engagement with said crank arm whereby to move said latching end of the crank arm out of engagement with said transversely facing recess when said hand-hold is rotated whereby said slide member is released for movement to said rst position, said slide member including an axially extending sleeve with said projection at one end thereof adapted to nonrotatably engage said hand-hold, a collar rotatably secured to said sleeve, said collar having a radially extending projection spaced axially from said first identified projection and forming said transversely facing recess for reception of said latching end of the crank arm, and a spring acting in torsion between the stationary portion and the hand-hold and adapted to resiliently retain said hand-hold in a selected position of rotation.

5. In a lock for a door, a stationary portion including a rose mounted nonrotatably on said door, a hand-hold rotatably mounted on said stationary portion, said handhold having a radially facing opening therein, said stationary portion having an arcuate groove adjacent said radially facing opening and an axially extending slot joining said arcuate groove, a slide member slidably mounted in said hand-hold, at least one projection extending from the slide member through and beyond said opening in the hand-hold, said slide member being normally spring biased to a first position wherein said projection is in alignment with and extends into said arcuate groove in said stationary portion, a crank arm rotatably mounted on said stationary portion, said crank arm having a latching end, said slide member having a transversely facing recess adjacent one end thereof having a position in alignment with said latching end of the crank arm when the slide member is in an inwardly shifted second position and 'wherein said projection is in a position within said axially extending slot and removed from the arcuate groove, cam means on said hand-hold having an operating engagement with said crank arm whereby to move said latching end of the crank arm out of engagement with said transversely facing recess when said hand-hold is rotated whereby said slide member is released for movement to said first position, said slide member including an axially extending sleeve and said one projection being on the axially extending sleeve, a collar rotatably secured to said sleeve, said collar having a radially extending projection spaced axially from said first identied projection and forming said transversely facing recess for reception of said latching end of the crank arm, a latch bolt assembly for said lock mounted in a direction transverse to the axis of rotation of said hand-hold, and a latch bolt reciprocatably mounted in said latch bolt assembly, a spindle attached to said hand-hold for operating said latch bolt, the radially facing opening in said hand-hold having a relatively narrow part and a relatively wide part, the projection on the collar being adapted to lie in said narrow part and the projection on the sleeve being adapted to lie in the relatively wide part whereby to provide a degree of rotational lost motion between said sleeve and said collar to enable release of said slide member.

6. In a lock for a door, a stationary portion including a rose mounted nonrotatably on said door, a hand-hold rotatably mounted in said stationary portion, said handhold having a radially facing opening therein, said stationary portion having an arcuate groove adjacent said radially facing opening and an axially extending slot joining said arcuate groove, a slide member slidably mounted in said hand-hold, at least one projection extending from the slide member through and lbeyond said opening in the hand-hold, said slide member being normally spring biased to a first position wherein said projection is in alignment with and extends into said arcuate groove in said stationary portion, a crank arm rotatably mounted on said stationary portion, said crank arm having a latching end, said slide member having a transversely facing recess adjacent one end thereof having a position in alignment with said latching end of the crank arm when the slide member is in an inwardly shifted second position and wherein said projection is in a position within said axially extending slot and removed from the arcuate groove, cam means on said hand-hold having an operating engagement with said crank arm whereby to move said latching end of the crank arm out of engagement with said transversely facing recess when said hand-hold is rotated whereby said slide member is released for movement to said rst position, a latch bolt assembly for said lock mounted in a direction transverse to the axis of rotation of said hand-hold and a liatch bolt member reciprocatably mounted in said latch bolt assembly, a gate rotatably mounted on said stationary portion, said gate having a projection which is spring biased into a position of alignment with a portion of said latch bolt member, cam means on said gate in operating engagement with said crank arm, said gate bein-g rotatable in response to operation by said latch bolt member, whereby to rotate the latching end of said crank arm out of engagement with said transversely facing recess and whereby said slide member is released for movement from said second position to said first position.

7. In a lock for a door, a stationary portion including a rose mounted nonrotatably on said door, a hand-hold rotatably mounted in said stationary portion, said handhold having a radially facing opening therein, said stationary portion having an arcuate groove adjacent said radially facing opening and an axially extending slot joining said arcuate groove, a slide member slidably mounted in said hand-hold, Iat least one projection extending from the slide member through and beyond said opening in the handhold, said slide member being normally spring biased to a rst position wherein said projection is in alignment with and extends into said arcuate groove in said stationary portion, a crank arm rotatably mounted on said stationary portion, said crank arm having a latching end, said slide member having a transversely facing recess adjacent one end thereof having a position in alignment with said latching end of the crank arm when the slide member is in an inwardly shifted second position and wherein said projection is in a position within said axially extending slot and removed from the arcuate groove, cam means on said hand-hold having an operating engagement with said crank arm whereby to move said latching end of the crank arm out of engagement with said transversely facing recess when said hand-hold is rotated whereby said slide member is released for movement to said lirst position, a latch bolt assembly for said lock mounted in a direction transverse to the axis of rotation of said handhold and a latch bolt member reciprocatably mounted in said latch bolt assembly, a gate of synethetic plastic resin material rotatably mounted on said stationary portion and spring biased into alignment with a portion of said latch bolt member, cam means on said gate in operating engagement with said crank arm, said gate being rotatable in response to operation by said latch bolt member, whereby to rotate the latching end of said crank arm out of engagement with said transversely facing recess and whereby said slide member 'is released fo-r movement from said second position to said rst position.

8. In a lock for a door, a stationary portion including a rose mounted nonrotatably on said door, a hand-hold rotatably mounted in said stationary portion, said handhold having a radially facing opening therein, said stationary portion having an arcuate groove adjacent said radially facing opening and an axially extending slot joining said groove, a slide member slidably mounted in said hand-hold, at least one projection extending from the slide member through and beyond said opening in the hand-hold, said slide member being normally spring biased to a first position wherein said projection is in alignment with and extends into said arcdate groove in said stationary portion, a crank arm rotatably mounted on said stationary portion, said crank arm having a latching end, said slide member having a transversely facing recess adjacent one end thereof having a position in alignment with said latching end of the crank arm when the slide member is in an inwardly shifted second position and wherein said projection is in a position within said axially extending slot and removed from the arcuate groove, cam means on said hand-hold having an operating engagement with said crank arm whereby to move said latching end of the crank arm out of engagement with said transversely facing recess when said hand-hold is rotated whereby said slide member is released for movement to said first position, a latch bolt assembly for said lock mounted in a direction transverse to the axis of rotation of said hand-hold and a latch bolt mem-ber reciprocatably mounted in said latch bolt assembly, a substantially elongated gate rotatably mounted on the longitudinal axis thereof on said stationary portion, said gate lying transverse to the direction of movement of said latch bolt member and having a projection extending throughout the length thereof, said projection being spring biased into alignment with a portion of said latch bolt member, cam means on said gate in operating engagement with said crank arm, said gate being movable in response to operation by said latch bolt member, whereby the latching end o-f said crank arm is rotated out of engagement with said transversely facing recess and whereby said slide member is released for movement from said second position to said first position.

9. In a lock for a door, a stationary portion including a rose mounted nonrotatably on each of the two sides of lsaid door, a rst hand-hold rotatably mounted in said stationary portion on one side of the door and a second handhold rotatably mounted on said stationary portion on the other side of the doo-r, said first hand-hold having a radially facing opening therein, said stationary portion having an arcuate groove adjacent said radially facing opening and an axially extending slot joining said arcuate groove, a slide member slidably mounted in said first handhold, at least one projection extending from the slide member through and beyond said opening in said rst hand-hold, said slide member being spring biased to a first position wherein said projection is in alignment with land extends into said arcuate groove in said stationary portion, and a spindle in nonrotatable engagement with said second hand-hold and in axially slidable, nonrotatable engagement with said slide member, a crank arm rotatably mounted on said stationary portion, said crank arm having a latching end, said slide member having a transversely facing recess adjacent one end thereof having a position in alignment with said latching end of the crank arm when the slide member is in an inwardly shifted second position and wherein said projection is in a position within said axially extending slot and removed from the arcuate groove, cam means on said first hand-hold having an operating engagement with said crank arm whereby to move said latching end of the crank arm out of engagement with said transversely facing recess when said first :hand-hold is rotated whereby said slide member is released for movement from said second position to said first position, a spring acting between the stationary portion and the first hand-hold and adapted to resiliently retain said radially facing opening in alignment with said axially extending slot, and a second spring acting between said stationary portion and said second hand-hold and adapted to resiliently hold said spindle, said slide member and said projection normally in alignment with said axially extending slot.

References Cited UNITED STATES PATENTS 2,709,911 `6/1955 Russell 70--147 3,112,944 12/1963 Adler 292-153 X 3,117,713 1/1964 Russell et al 70-146 X 3,123,995 3/1964 Russell et al 70-146 BOBBY R. GAY, Primary Examiner. 

1. IN A LOCK FOR A DOOR, A STATIONARY PORTION INCLUDING A ROSE MOUNTED NONROTATABLY ON SAID DOOR, A HAND-HOLD ROTATABLY MOUNTED IN SAID STATIONARY PORTION, SAID HANDHOLD HAVING A RADIALLY FACING OPENING THEREIN, SAID STATIONARY PORTION HAVING AN ARCUATE GROOVE ADJACENT SAID RADIALLY FACING OPENING AND AN AXIALLY EXTENDING SLOT JOINING SAID ARCUATE GROOVE, A SLIDE MEMBER SLIDABLY MOUNTED IN SAID HAND-HOLD, AT LEAST ONE PROJECTION EXTENDING FROM THE SLIDE MEMBER THROUGH AND BEYOND SAID OPENING IN THE HAND-HOLD, SAID SLIDE MEMBER BEING NORMALLY SPRING BIASED TO A FIRST POSITION WHEREIN SAID PROJECTION IS IN ALIGNMENT WITH AND EXTENDS INTO SAID ARCUATE GROOVE IN SAID STATIONARY PORTION, A CRANK ARM ROTATABLY MOUNTED ON SAID STATIONARY PORTION, SAID CRANK ARM HAVING A LATCHING END, SAID SLIDE MEMBER HAVING A TRANSVERSELY FACING RECESS ADJACENT ONE END THEREOF HAVING A POSITION IN ALIGNMENT WITH SAID LATCHING END OF THE CRANK ARM WHEN THE SLIDE MEMBER IS IN AN INWARDLY SHIFTED SECOND POSITION AND WHEREIN SAID PROJECTION IS IN A POSITION WITHIN SAID AXIALLY EXTENDING SLOT IN SAID STATIONARY PORTION AND IS REMOVED FROM THE ARCUATE GROOVE, CAM MEANS ON SAID HAND-HOLD HAVING AN OPERATING ENGAGEMENT WITH SAID CRANK ARM WHEREBY TO MOVE SAID LATCHING END OF THE CRANK ARM OUT OF ENGAGEMENT WITH SAID TRANSVERSELY FACING RECESS WHEN SAID HANDHOLD IS ROTATED, WHEREBY SAID SLIDE MEMBER IS RELEASED FOR MOVEMENT TO SAID FIRST POSITION. 